Yea that was the idea that it acts more as a catapult. It could also work that like a piston it can launch multiple connected blocks, that way you could make a lot of movable platforms build and gates a lot easier.
If it's not extending n blocks per n charge it's not a (telescoping/ladder) piston but more of a catapult or a launchpad spring. Still, this could be fun and a great way to improve TNT cannons and so on.
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Yea that was the idea that it acts more as a catapult. It could also work that like a piston it can launch multiple connected blocks, that way you could make a lot of movable platforms build and gates a lot easier.